On Thursday afternoon, Bloomberg stated that he had been informed by the FBI that the brothers did indeed intend to bomb Times Square. “We now know that that possibility was all too real,” Bloomberg said. The surviving attacker admitted that he and his brother intended to drive to New York and intended to detonate additional explosives in Times Square. "They had built these additional explosives," Bloomberg added.[...]

[Police Commissioner] Kelly said that the first interrogation of Dzhokhar revealed the "party" comments. That interrogation happened Saturday evening to Sunday morning. The second interrogation, which revealed the Tsarnaevs' alleged plans to bomb Times Square, took place Sunday evening to Monday morning[...]

The brothers were in Times Square in April 2012, as well as November, Kelly stated. There were pictures of the brothers from that time.